A picture needs to be corrected when it is too dark or too bright — and this can happen if the lighting was not proper when you clicked the original picture with your camera. Additionally, you may also want to make some tonal changes to a picture so that it stands apart. In the following tutorials you will learn how to make corrections to inserted pictures in terms of their brightness, sharpness, softness, and contrast values – all from within PowerPoint without having to use an external program! Select the one that matches the version of PowerPoint you use: